[codynewman13]

i have a 95 z28 lt1 auto my problem is if i leave my car sit overnight it will not start i can sit there and crank till the battery is dead and it wont start but if i go and hit it with starting fluid it starts right up once it it starts tho i have to keep it running by revving it hard till its warmed up then it runs and idles fine and i can go drive and let it sit for hours and hours and it will start right up till i let it sit overnight again im lost on this?

 

[Beef supreme]

Go get a fuel pressure gauge and follow this guide then report back!

Part 1 -Troubleshooting the Fuel Pump (GM 4.3L, 5.0L, 5.7L)

 

[shoebox]

The above article is not for your car or engine and may lead you to an erroneous diagnosis. Your car does not need 50 psi to start it. If you want some information specific to the LT1 in your car, look here. You will still need a pressure test gauge.

 

[codynewman13]

well i ordered a new fuel pump and regulator should be in thursday i will let you guys know what happens with that but i still feel like it will start without starting fluid after that but i will have to rev it to keep it running i hear that is common problem with these lt1's?

 

[steveo]

did you test pressure first?

that really doesn't sound like a fuel pressure issue. that sounds like a cold start issue due to misreading temp sensor or something.

 

[codynewman13]

whats the temp sensor your talking about is it a common problem?

 

[shoebox]

whats the temp sensor your talking about is it a common problem?

The temp sensor in the water pump. It is where the computer gets its info about coolant temp. Scanner data will easily confirm if it is working correctly. The harder way to check it is with a meter.

 

[codynewman13]

how can i go about scanning it?

 

[shoebox]

Have access to an OBD-I scanner with a 16 pin adapter cable? An alternate is to use PC software and a cable, together with a program like TTS Datamaster, Freescan or RT Tunerpro.

 

[codynewman13]

started looking into the obd1 scanner looks like a good buy for my car thanks!

 

[codynewman13]

changed the fuel pump and it fixed part of my problem now it fires right up everytime but i still have to rev it for a bit to keep it running any ideas? i'll try and upload a video later thanks